I don't know where Thrill Pittsburgh 2009 will take place, but I have two suggestions:

One -- Point State Park.

Two - Schenley Plaza.

Get hundreds of MJ fans zombies to dance, and get some aerial shots of that. Throw the video up on YouTube, and voila: Pittsburgh reclaims its Romero-inspired title as the Zombie Capital of the World. Talk about a livable city! Paging the producers of My Tale of Two Cities!